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Institutional Investment Manager
CASTLEARK MANAGEMENT LLC
CASTLEARK MANAGEMENT LLC (CIK: 0001106832), located at 1 N Wacker Dr, Chicago, IL. Institutional holdings reported to the SEC.

Institutional Holdings (2014Q1)
Original 13F HR (0001106832-14-000002) filed in 2014.05.20
#
Name
Shares
Value ($)
%
Options
Notes
101 PERRIGO CO PLC 1,740 269 0.01%
102 PERKINELMER INC 1,156,300 52,103 1.48%
103 PEPSICO INC 1,600 134 0.00%
104 PAYCHEX INC 17,350 739 0.02%
105 PARKER HANNIFIN CORP 637,190 76,278 2.17%
106 PALO ALTO NETWORKS INC 138,715 9,516 0.27%
107 PACWEST BANCORP DEL COM 271,790 11,690 0.33%
108 PACIRA PHARMACEUTICALS INC 87,339 6,113 0.17%
109 PACCAR INC 772,470 52,095 1.48%
110 ORACLE CORP 1,600,100 65,460 1.86%
111 ONEOK PARTNERS LP 26,160 1,401 0.04%
112 ONEOK INC NEW 19,600 1,161 0.03%
113 ONE GAS INC COM 4,900 176 0.01%
114 OILTANKING PARTNERS LP 38,620 2,978 0.08%
115 Nomura Holdings Inc 1,036,200 6,663 0.19%
116 NXP SEMICONDUCTORS N V 746,900 43,925 1.25%
117 NOVADAQ TECHNOLOGIES INC 220,303 4,908 0.14%
118 NGL ENERGY PARTNERS LP 65,700 2,466 0.07%
119 NEWFIELD EXPL CO 7,300 229 0.01%
120 NABORS INDUSTRIES LTD 16,000 394 0.01%
121 Mueller Industries Inc 602,875 4,510 0.13%
122 Medtronic Inc 3,400 209 0.01%
123 Marchex Inc 884,817 9,299 0.26%
124 MYRIAD GENETICS INC 26,500 906 0.03%
125 MURPHY USA INC COM 5,625 228 0.01%
126 MURPHY OIL 40,700 2,558 0.07%
127 MUELLER WTR PRODUCTS INCORPORATED COM SER A 662,248 6,291 0.18%
128 MPLX LP 45,300 2,219 0.06%
129 MOTORCAR PTS AMER INC 365,551 9,713 0.28%
130 MOOG INC CL A 31,200 2,044 0.06%
131 MONSANTO CO NEW 6,120 696 0.02%
132 MOBILE MINI INC 205,355 8,904 0.25%
133 MISTRAS GROUP INC 195,505 4,452 0.13%
134 MIDDLEBY CORP 232,191 61,347 1.74%
135 MICROSOFT CORP 4,000 164 0.00%
136 MICROCHIP TECHNOLOGY 20,150 962 0.03%
137 MICHAEL KORS HLDGS LTD 687,000 64,076 1.82%
138 MCDONALDS CORP 800 78 0.00%
139 MASTERCARD INCORPORATED 695,940 51,987 1.48%
140 MARKWEST ENERGY PARTNERS LP 76,730 5,012 0.14%
141 MARATHON PETE CORP 106,200 9,244 0.26%
142 MAGELLAN MIDSTREAM PRTNRS LP 147,480 10,285 0.29%
143 LYONDELLBASELL INDUSTRIES N 98,200 8,734 0.25%
144 LOGMEIN INC 189,360 8,500 0.24%
145 LIVEPERSON INC 308,997 3,730 0.11%
146 LIONBRIDGE TECHNOLOGIES ORD 770,995 5,173 0.15%
147 LINN ENERGY LLC UNIT LTD LIAB 46,900 1,328 0.04%
148 LINCOLN ELEC HLDGS INC 6,700 482 0.01%
149 LIGAND PHARMACEUTICALS INC 236,646 15,919 0.45%
150 LEVEL 3 COMM 9,700 380 0.01%
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